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Principal Engineer United States Jobs (On-site work)

396 Job Offers

Principal Software Engineer
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Principal Software Engineer sought to lead architecture and development of scalable compute platforms, workflow, and observability systems for a systematic asset manager. Requires 8+ years in Python, 4+ years leading large-scale system design, and 3+ years in distributed systems and AWS cloud-nat...
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United States, Massachusetts
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Salary
200000.00 - 250000.00 USD / Year
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Apollo Solutions
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Principal Mechanical Design Engineer, Industrial Enclosures
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Enphase Energy seeks a Principal Mechanical Design Engineer to architect enclosure systems for a Solid State Transformer in Austin, TX. You will lead structural FEA, ingress protection, and corrosion strategies for large-scale electrical equipment. Requires 15+ years of experience, deep enclosure...
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150000.00 - 210000.00 USD / Year
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Enphase Energy
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Sr Principal Electrical Engineer
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Senior Principal Electrical Engineer sought to lead innovative electrical design for medication delivery monitoring and sensing products in Round Lake, US. Requires a Bachelor’s in Electrical Engineering and 10+ years of experience in electromechanical hardware development, ideally in medical dev...
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128000.00 - 176000.00 USD / Year
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Baxter
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Principal Software Engineer (CDSS Cloud Services)
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Principal Software Engineer (CDSS Cloud Services) sought to design and deploy AI-driven, cloud-native security solutions in Santa Clara. You will build large-scale distributed systems, develop AI agents with LangChain or CrewAI, and code in GoLang or Python. Lead end-to-end projects on Kubernetes...
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147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Systems Engineer
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Columbia Technology Partners seeks a Principal Systems Engineer to lead engineering and sustainment of mission-critical FORNSAT and RF-enabled systems. This senior role requires an active Security Clearance, DOD 8570 certification, and 20+ years of experience in complex Linux, virtualization, and...
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Location
United States, Annapolis Junction
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Salary
190000.00 - 225000.00 USD / Year
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Columbia Technology Partners
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Principal Systems Safety Engineer
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Principal Systems Safety Engineer sought in Phoenix, AZ to lead safety strategies for advanced integrated avionics platforms. Requires a Bachelor's in Engineering, 6+ years in commercial avionics, and expertise in SAE/ARP 4761 & 4754A. Drive hazard analyses, fault tree analysis, and system certif...
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Not provided
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Real Time Consulting
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Principal Software Engineer - Microsoft AI Search
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Principal Software Engineer sought for Microsoft AI Search in Redmond. Drive technical direction for AI-powered image search, integrating LLMs and multimodal AI to deliver intelligent visual experiences at global scale. Requires 6+ years coding in C++, Python, or Java with a Bachelor's in CS. Own...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Controls Engineer
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Principal Controls Engineer sought in Marion, US, to drive life-saving innovations at Baxter. Requires 7+ years’ experience with Allen-Bradley PLCs, Fanuc/Yaskawa robotics, and Cognex/Keyence vision systems. Lead automation projects, ensure regulatory compliance, and optimize manufacturing proces...
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Salary
112000.00 - 154000.00 USD / Year
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Baxter
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Principal Quantum Materials Nanofabrication Engineer
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Join Microsoft Quantum in West Lafayette as a Principal Quantum Materials Nanofabrication Engineer. You will develop and optimize semiconductor and hybrid device fabrication processes for topological qubits in a state-of-the-art cleanroom. Requires a PhD or equivalent in Physics/Engineering with ...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Automation/test Engineer
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Principal Software Automation/Test Engineer sought by Palo Alto Networks to architect next-gen tooling platforms and drive AI-powered automation in Santa Clara. Leverage Python, AI/ML, and cloud-native services (AWS, GCP, Azure) to build scalable frameworks. Requires 9+ years of experience with P...
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147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Engineer - Evaluation & Simulation
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Principal Engineer leading Evaluation & Simulation for AV Labs. Architect large-scale, cloud-based simulation platforms running millions of closed-loop virtual miles. Requires 10+ years in autonomous systems, expert C++/Python, and deep cloud architecture skills. Drive high-fidelity validation, e...
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Location
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302000.00 - 336000.00 USD / Year
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Uber
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Sr Principal Electrical Engineer
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Senior Principal Electrical Engineer sought to lead innovative electrical design for life-saving medication delivery and monitoring devices. This role demands 10+ years of experience in electromechanical hardware, embedded systems, and analog/digital circuit design. Based in Round Lake, IL, the p...
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Salary
128000.00 - 176000.00 USD / Year
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Baxter
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Principal Quantum Materials Nanofabrication Engineer
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Join Microsoft Quantum in West Lafayette as a Principal Quantum Materials Nanofabrication Engineer. You will develop and optimize semiconductor and hybrid device fabrication processes for topological qubits in our advanced cleanroom. We seek a PhD or equivalent experience in Physics or Engineerin...
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Salary
142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Quantum Materials Engineer
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Lead the development of topological qubits at Microsoft Quantum in West Lafayette, IN. As a Principal Quantum Materials Engineer, you will drive MBE growth of superconductor-semiconductor heterostructures for scalable quantum computing. Leverage AI tools to accelerate materials discovery and opti...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Quantum Measurement Engineer
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Lead quantum measurement innovation at Microsoft Quantum in West Lafayette. As Principal Quantum Measurement Engineer, you will define cryogenic characterization of topological qubits, develop novel measurement protocols, and drive large-scale experimental campaigns. Requires a PhD/advanced degre...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer, Android
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Principal Software Engineer, Android – Milwaukee, WI. Lead Android development for life-saving medical devices at Baxter, leveraging Java/Kotlin, Android SDK, and NDK. Drive robust software architecture, TDD, and CI/CD in a regulated environment (IEC 62304). Enjoy comprehensive benefits, professi...
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Salary
112000.00 - 154000.00 USD / Year
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Baxter
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Principal Software Engineer
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Principal Software Engineer role at Microsoft AI in Redmond, WA. Lead the design of distributed systems, APIs, and personalization pipelines powering Copilot’s adaptive intelligence. Requires 6+ years coding in C++, C#, Java, or Python with expertise in scalable data infrastructure. Join a team r...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Engineer Software (AIOps)
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Principal Software Engineer (AIOps) role at Palo Alto Networks in Santa Clara, CA. You will design and build next-gen, highly-scalable data processing and analytics systems using Java and distributed systems. Requires 5+ years of enterprise application experience, deep design pattern knowledge, a...
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Software Engineer
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Principal Software Engineer sought to lead architecture and delivery of next-gen warehouse supply chain platforms in Plano, TX. This role combines deep backend expertise in Java, Spring Boot, and Python with event-driven, cloud-native systems (Kafka, Azure/AWS). You will drive scalable microservi...
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Salary
127500.00 - 221800.00 USD / Year
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Pepsico
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Principal Engineer
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Wood Rodgers seeks a Principal Engineer for its Geotechnical Department in Sacramento, CA. You will lead diverse projects including dams, levees, and landslides, requiring a California PE and 15+ years of geotechnical experience. Key duties involve client management, field investigations, and tec...
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Salary
126500.00 - 158100.00 USD / Year
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Wood Rodgers
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About the Principal Engineer role

Explore the pinnacle of technical leadership with Principal Engineer jobs. A Principal Engineer is a master-level technical expert and strategic leader within an engineering organization. This is not merely a senior role; it represents the apex of an individual contributor technical track, where influence, architectural vision, and deep expertise converge to shape the technological future of a company. Professionals in these roles are the go-to authorities for the most complex, high-impact challenges, setting technical standards and driving innovation across multiple teams or the entire organization.

The common responsibilities of a Principal Engineer are vast and critical to long-term success. Typically, they involve defining and driving the long-term technical strategy and architectural vision for major platforms or product suites. They are responsible for researching, prototyping, and selecting technologies that will scale to meet future business needs. A core part of their duties includes leading the design and implementation of complex, cross-functional systems, ensuring they are resilient, secure, and efficient. They serve as the ultimate escalation point for critical production issues, conducting deep-dive analysis and root cause investigations to resolve systemic problems. Furthermore, Principal Engineers have a significant mentorship and governance function, actively coaching senior and staff engineers, establishing best practices, and conducting rigorous code and design reviews to maintain exceptional quality across all engineering outputs. They are also key collaborators, working closely with engineering managers, product leaders, and enterprise architects to align technical execution with business objectives.

The typical skills and requirements for these high-level positions are extensive. A bachelor's or master's degree in computer science, engineering, or a related field is common, though equivalent demonstrable experience is often acceptable. Most roles require a minimum of 10+ years of progressive, hands-on software development or infrastructure engineering experience, with a significant portion spent in lead or architecture-focused positions. Essential technical skills include mastery of relevant programming languages and frameworks, profound knowledge of system design patterns and distributed architectures, and expertise in cloud platforms like AWS, Azure, or GCP. They must possess exceptional analytical and problem-solving abilities to deconstruct ambiguous, complex problems. Beyond technical prowess, superior soft skills are non-negotiable; this includes outstanding communication to articulate technical vision to both technical and non-technical stakeholders, proven leadership and influence without formal authority, and strategic business acumen. For those seeking to define technological frontiers and mentor the next generation of experts, Principal Engineer jobs offer a challenging and highly rewarding career path at the forefront of innovation.